List all the structures an air molecule crosses as it travels to a pulmonary capillary. Begin at the external nares and end at the alveoli.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

a = executive branch; b = judicial branch

characteristics of hydrocarbons